SUMMARY OF PROPOSAL 81751

ASCA monitoring of Seyfert 2 galaxy, NGC6300

ABSTRACT

NGC 6300 is a nearby Seyfert 2 galaxy. The observation with RXTE revealed that hard X-ray emission from NGC 6300 is described by a pure reflection model (Leighly et al. 1999, ApJ, 522, 209). This spectrum indicates that the X-ray emission from nucleus is completely blocked by thick matter. NGC6300 was observed with SAX 2.5 years after the RXTE observation. The spectrum is dramatically changed from that with RXTE (Leighly et al. 2000, RXTE meeting March 23-25). Since spectral variability gives us valuable informations on the structure of an AGN, we propose a monitoring observation of NGC 6300 with ASCA.